package com.lzq.lottery_system.service.impl;

import com.lzq.lottery_system.common.errorcode.ServiceErrorCodeConstants;
import com.lzq.lottery_system.common.exception.ServiceException;
import com.lzq.lottery_system.service.PictureService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.util.UUID;
@Service
public class PictureServiceImpl implements PictureService {

    @Value("${pic.local-path}")
    private String localPath;

    @Override
    public String savePicture(MultipartFile multipartFile) {
        //创建目录
        File dir = new File(localPath);
        if (!dir.exists()) {
            dir.mkdirs();
        }

        //创建索引
        String fileName = multipartFile.getOriginalFilename();
        assert fileName != null;
        String suffix = fileName.substring(fileName.lastIndexOf('.'));
        fileName = UUID.randomUUID() + suffix;

        //图片保存
        try {
            multipartFile.transferTo(new File(localPath + '/' + fileName));
        } catch (IOException e) {
            throw new ServiceException(ServiceErrorCodeConstants.PICTURE_UPLOAD_ERROR);
        }
        return fileName;
    }
}
